Claude ludovic taverdon



@uiten gisten @anni @ffice CLAUDE LUDovIe TAVEEDON, oF PAiusnND JULES MoEET, or SEVRES,

Y FRANCE.' A

Letters Patent No. 82,659, dated September 29, 1868.

IMPROVEMENT IN PUMPS.

TO ALL WHOM IT MAY CONCERN:

Be it known that we, CLAUDE LUDOVIC TAVERDON, of No. 60 Boulevart de Strasbourg, Paris, in the Empire of France, practical engineer, and JULES MORET, of the town of Sevres, near Paris, in the Empire of France, merchant, 'have jointly invented an Improved Lift and Force Double-Action Pump, giving a continuous and regular supply of liquid; and we do hereby declare that the following is a full and exact description thereof,

reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Pumps upon our system, although very simple, are compact, strongly built, and are not exposed to interior damage.

Their novelty consists chiefly in the particular arrangement of the piston, which is composed of two stampedleather heads, connected with each other by a tubular rod or sheath. This said piston works in a cylinder, dividedin'to two chambers by a diaphragm, so that each head of the said piston plays in a separate chamber,

and their tubular connecting-rod or sheath slides in a hole bored through the centre of the diaphragm, which4 holeris p'rcvided with a. water-tight-paeking.

The tubular rod or sheath, which connects both heads of the piston, is pierced with several holes for the passage of the liquid,A which is forced alternately by each ofthe piston-heads. vWhen one oi' the said heads creates the vacuum behind it, the other head forces the liquid forward, so that its outilo'w takes place unintermittingly. Y i

The stamped-leather heads of the pistonraet alternately as piston and as valve.- There is no other valve.

As in ordinary 'lift and force-pumps, there is an upper space, in which the air driven by the rising liquid accumulates, andiforms an elastic cushion, which, by its reaction, regulates the speed of the outflow of the liquid.

We will now proceed to describe the accompanying drawing, which, to the end that ohr system may be thoroughly understood, represents, invertical section, two 'diiTerent views.,

In Figure 1, A' is a tubular rod or sheath, connecting two pistons, P and P', made of stamped leather, and which play in the'cylinders S S. B is an air-receiver or elastic cushion, situated abovethc cylinder; C, orifice by which the liquid enters; D, outlet-oriiice; E lil/,packings of stamped leather, the iirstbeing for the passage of the piston-rod T, the second for the passage of the tubular connecting-rod A. F F are'fthe leather packings ofthe pistons; m m, perforations through the piston-heads; o, perforations in the tubular connectingrod Afand t, perforations in the upper chamber, S, ofthe cylinder, for the passage ofliquid. Uis a removable diaphragm, firmly hired, when in use, as will be understood, and forming a partition about the middle of the cylinder. U' is the top, through which the rod T slides. i

I For the better demonstration of the apparatus, we will suppose it filled wlth water. Letus now consider what takes place when both piston-heads are moved downward, that is to say, in the descending motion. l

The piston P, as it moves down, creates a partial vacuum above it. The liquid will rush through the pert`orated disk or bottom of the piston P', and, passing through the tubularl rod AHV-ill ll up the vacant space formed by the motion of the piston P. An additional quantity will iiow up through P, to fill the Aenlarged space 'between it and the diaphragm U.

At thev same time, the liquid which was under P (in the space S) will be forced through the orifices L into the common receiver, c. 4

Now, in the ascending motion, the water which is above P will pass beneath it, a partial vacuum will be,

produced under P', and the liquid which is above this piston P willbe forced uptthrough the tubular ro'd, and down through the piston P, and will flow out through the crices Il, so that whether the piston hei-moved upward or downward, the water will be continuously drawn in and forced out at the proper oriiicesyand all without a necessity for any special valve other than the valved heads of the piston.

We would here draw attention to the simplicity of the fitting together ofthe several parts when setting up the pump, this being ei'fected by screwing the single piece B on itsleather joint at R. By screwing up the said piece, all the other leatherjoints, E, E', and V, will be at once tightened.

We reserve the right of giving .to our lift and force-pump whatever shape wekmay find most suitable to the requirementsof its various applications;

For some of these wemay simplify the arrangement. Thus we might, as in Figure 2, form the main part of the pump of a cylinder, S S', bored of two di'erent diameters. The projection produced by this difference of bore forms the seat of the diaphragm U, and this particular circumstance results from the di`ercncc of diameter, namely, that the greater pressure above always tends to keep the diaphragm onnits seat.

Another advantage that of compensating the difference of surface of the pistons, resulting from the pas-` sage of the connecting tubular rod A as guide through' the cover J which closes the pump.

We would here remark, that in this kind of fitting, when the pieces are put together, a disk, I, set in a. cir-A cular groove, is instrumental in sustaining the stampedleather packings O.. I i The upper part ofthe connecting tubulal rod or sheath A is closed by a plug, B, soldered to it. This plug is screw-tapped in its centre, to receive the compass-head piece L, where hinges the rod T, by which the pump is set at work.

The stamped-leatherv packing O 4of the disk U is kept on the said disk by means of a washer, compressed by screws not represented.

A little water is poured into the widened part ofthe cover K to form a hydraulicjoint.

If the pump is horizontal, .a cisteru or basin, M, should be cast together with the cover J, forming the end ofthe tubular rod or sheath, as shown by red lines. The movement then takes place within this cistern or basin.

What We claim as our invention, and desire to secure by Letters Patent, is-

The within-described construction and arrangement ofthe piston, composed of two valved heads, connected together by a tubular rod or sheathv adapted for the .passage of the liquid, as specilied, Working in a chamber divided into two compartments, S S', by a disk or partition, U, all as and for the purposes herein set forth.

' C. L. TAVERDON.

J. MORET. Witnesses:

D. LAUBRVIN, 0. E., Boulevart de Strasbourg, 60, F. 0Lco'r'r. 

